Page 358 - Contributed Paper Session (CPS) - Volume 4

CPS2277 Iris M H Yeung et al.
2. It is interesting to note that knowledge on landfill fullness and construction
time for new incinerator has significant but opposite effects on the
contrast. The positive effect for knowledge of landfill fullness (b = 0.464;
odds ratio = 1.591) suggests that a person with this knowledge is 59%
more likely to be willing to pay HK$30 rather than below HK$30. On the
other hand, a person possessing knowledge of long construction time for
new incinerator is 2.33 times (b = -0.843; odds ratio = 0.430) more likely
to be willing to pay below HK$30 rather than exactly HK$30.
Table 2 shows the percentage distribution of 3 WTP groups for all three
knowledge variables. Based on the chi-square tests, all three knowledge
variables affect WTP significantly. But respondents possessing knowledge
on waste charge method and landfill fullness tend to be willing to pay
HK$30 or above, whereas respondents possessing knowledge on
construction time for new incinerator are willing to pay either below or
above HK$30 rather than exactly HK$30. This may explain why knowledge
on construction time has negative effect on this contrast.

Table 1. Parameter Estimates, Standard Errors (SE), and Odds Ratio (OR)
for Multinomial and Ordinal Logit Models of the Willingness to Pay
(n=753)

Above HK$30 vs. Exactly HK$30 vs. Ordinal Logit Model
Below HK$30 Below HK$30
Variable Estimate SE OR Estimate SE OR Estimate SE OR
Intercept -5.566*** 0.967 2.500*** 0.846 -4.848*** 0.672
-3.193*** 0.658
Know waste 0.209 0.205 1.233 0.055 0.188 1.057 0.225 0.171 1.129
charge
Know 0.352 0.249 1.422 0.464** 0.232 1.591 0.122 0.144 1.252
landfill
Know -0.169 0.372 0.844 -0.843** 0.413 0.430 -0.179 0.277 0.836
incinerator
Support 1.045*** 0.120 2.843 0.611** 0.103 1.842 0.794*** 0.082 2.213
waste
charge
Support 0.151 0.121 1.163 0.156 0.110 1.169 0.088 0.085 1.092
landfill
Support 0.226* 0.126 1.253 0.040 0.116 1.040 0.165* 0.089 1.179
incinerator
Daily waste 0.504*** 0.169 1.655 0.134 0.154 1.143 0.333*** 0.118 1.395
amount
Gender 0.141 0.210 1.152 -0.176 0.199 0.839 0.089 0.149 1.093
(male)
Area (near -0.234 0.265 0.792 -0.024 0.233 0.977 -0.132 0.184 0.877
landfill &
incin)
Edu 0.012 0.336 1.012 0.195 0.272 1.216 0.027 0.225 1.028
(secondary)

347 | I S I W S C 2 0 1 9